#pragma once
#include<iostream>
#include<string>
#include<functional>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<unistd.h>
#include<cstring>
#include<pthread.h>
#include<memory>
#include"InetAddr.hpp"
#include"Log.hpp"

namespace socket_ns
{
    class Socket;
    const static int gbacklog = 8;
    using socket_sptr = std::shared_ptr<Socket>;
    enum
    {
        SOCKET_ERROR=1,
        BIND_ERROR,
        LISTEN_ERROR,
        USAGE_ERROR
    };
    class Socket
    {
        public:
        virtual void CreateSocketOrDie() = 0;
        virtual void BingSocketOrDie(InetAddr &addr) = 0;
        virtual void ListenSocketOrDie() = 0;
        virtual int Accepter(InetAddr *addr) = 0;
        virtual bool Connetcor(InetAddr &addr) = 0;
        virtual void SetSocketAddrReuse() = 0;
        virtual int SockFd() = 0;
        virtual int Recv(std::string *out) = 0;
        virtual int Send(const std::string &in) = 0;
        virtual void Close() = 0;
        public:
        void BuildListenSocket(InetAddr &addr)
        {
            CreateSocketOrDie();
            SetSocketAddrReuse();
            BingSocketOrDie(addr);
            ListenSocketOrDie();
        }
        bool BuildClientSocket(InetAddr &addr)
        {
            CreateSocketOrDie();
            return Connetcor(addr);
        }
    };
    class TcpSocket:public Socket
    {
        public:
        TcpSocket(int fd = -1)
            :_sockfd(fd)
        {}
        void CreateSocketOrDie()override
        {
            _sockfd = socket(_sockfd,SOCK_STREAM,0);
            if(_sockfd<0)
            {
                LOG(FATAL,"socket error");
                exit(SOCKET_ERROR);
            }
            LOG(DEBUG,"socket create success,sockfd is :%d\n",_sockfd);
        }
        void BingSocketOrDie(InetAddr &addr) override
        {

            struct sockaddr_in local;
            memset(&local,0,sizeof(local));
            local.sin_family= AF_INET;
            local.sin_port = htons(addr.Port());
            local.sin_addr.s_addr = inet_addr(addr.Ip().c_str());

            int n = ::bind(_sockfd,(struct sockaddr*)&local,sizeof(local));
            if(n<0)
            {
                LOG(FATAL,"bind error\n");
                exit(BIND_ERROR);
            }
            LOG(DEBUG,"bind success sockfd is: %d",_sockfd);

        }
        void ListenSocketOrDie() override
        {
            int n  = ::listen(_sockfd,gbacklog);
            if(n<0)
            {
                LOG(FATAL,"listen error\n");
                exit(LISTEN_ERROR);
            }
            LOG(DEBUG,"listen success sockfd is:%d",_sockfd);
        }
        int Accepter(InetAddr *addr) override
        {
            struct sockaddr_in peer;
            socklen_t len  = sizeof(peer);
            int sockfd = ::accept(_sockfd,(struct sockaddr*)&peer,&len);
            if(sockfd<0)
            {
                LOG(WARNING,"accept error\n");
                return -1;
            }
            *addr = peer;
            return sockfd;
        }
        virtual bool Connetcor(InetAddr &addr)
        {
            struct sockaddr_in server;
            memset(&server,0,sizeof(server));
            server.sin_family = AF_INET;
            server.sin_port = htons(addr.Port());
            server.sin_addr.s_addr = inet_addr(addr.Ip().c_str());
            int n = connect(_sockfd,(struct sockaddr*)&server,sizeof(server));
            if(n<0)
            {
                std::cerr<<"connet error"<<std::endl;
                return false;
            }
            return true;
        }
        void SetSocketAddrReuse()override
        {
            int opt = 1;
            ::setsockopt(_sockfd,SOL_SOCKET,SO_REUSEADDR|SO_REUSEPORT,&opt,sizeof(opt));
        }
        int Recv(std::string *out)override
        {
            char inbuffer[4096];
            ssize_t n = ::recv(_sockfd,inbuffer,sizeof(inbuffer)-1,0);
            if(n>0)
            {
                inbuffer[n] = 0;
                *out = inbuffer;
            }
            return n;
        }
        int Send(const std::string &in)override
        {
            int n = ::send(_sockfd,in.c_str(),in.size(),0);
            return n;
        }
        int SockFd()override
        {
            return _sockfd;
        }
        void Close()override
        {
            if(_sockfd>-1)
            {
                ::close(_sockfd);
            }
        }
        private:
        int _sockfd;
    };
}
